Color coated galvanised iron sheets common quality problem analysis

1. Color Coated Galvanised Iron Sheets bad solvent resistance.

Characteristics : Butanone wipe lose the punctiform paint.

There are many causes:

(1) The baking temperature does not reach the requirement.

(2) The painting solidification meet some problems.

(3) Pretreatment is not tidy.

2. The impact fails.

Characteristics: After the inspection, the places stricked by the strapping will fall the paint.

There are many causes:

(1) Pretreatment is not well.

(2) The temperature when people solidify the paint is not reasonable.

3. Shrinkage.

Characteristics: The film is not level off and some place grinning.

There are many causes:

(1) The surface is not tidy.

(2) The primer cooling water is not tidy.

(3) The viscosity does not reach the production requirement.